Black areas in display become blue vertical lines

[DuvelN1]

I have set this laptop aside because it had a problem, which I wish to solve so my daughter can use it. It works perfectly, but in black or very dark areas the color turns to blue vertical lines.

I am wondering if this is a software problem, or a hardware problem. If it is a hardware problem, the problem shoul remain in the same area, unless it is a videocard problem. But Then I want to identify the item to be changed, as I do not want to pour too much money in this old thing. I would take any suggestions, I have attached a screen shot, which may not the problem as I believe it is an output problem

[Jeet_singh]

@DuvelN1,

Thanks for engaging in HP support Forums! This is a wonderful location to converse with the community, get assistance and find tips!

As I understand there's a black vertical line on the screen,

No worries, as I'll be glad to help you, that said, I'll need a few more details to dissect your concern & provide an accurate solution: 

Did you check with an external / alternate monitor?

If you haven't, Please try an alternate monitor to understand if this is either a hardware or a software failure,

if the issue does not appear on the alternate monitor, you may need to replace the display assembly on your computer,

if the issue appears on the alternate monitor/TV as well, re-install the graphics card drivers & update it from the official HP Website: Click here

If you don’t have an alternate monitor, I recommend checking if the issue appears on the BIOS screen (restart the computer and tap on F10 to access BIOS)

If the issue does not appear in BIOS, reinstall the graphics card drivers & update BIOS using the above link,
If it does, Contact HP to replace the LCD/Repair the computer:

If the issue occurred after an accident (such as dropping it on the floor, liquid spilled on it, etc.) there could be a hardware failure and in such cases, you may need to get the computer repaired via HP (there could be a charge involved if the PC isn't covered by the accidental damage protection plan)

HP Support can be reached by clicking on the following link:  

* Open link:  www.hp.com/contacthp/

* Enter Product number or select to auto detect

* Scroll down to "Still need help? Complete the form to select your contact options"

* Scroll down and click on HP contact options - click on Get a Case & phone number.

They will be happy to assist you immediately. 

If the unit is under warranty repair services under the manufacturer's warranty will be free of charge.

If you would like to thank me for my efforts to help you, 

feel free to give me a virtual high-five by clicking the 'Thumbs Up' icon below, 

Followed by clicking on the "Accept as solution".

Have a great day!

[DuvelN1]

Thank you very much, I do not know why I didn't think about hooking it up to my projector. It works fine through VGA export, so I guess it is the screen that needs replacing

I noticed that during startup it didnt show any defect, but after 2 minutes, the blue was back so it must be temperature related, I will change the LCD, thank you very much!

[Jeet_singh · Accepted solution]

@DuvelN1,

Thank you for replying,

As you have diagnosed the issue to be a possible hardware failure. Please take your time and get back to us if you need any assistance. I'll be more than glad to help you.

You've been great to work with and it has been a genuine pleasure interacting with you.
I hope both you and your product works great and remain healthy for a long time 😉 

To simply say thanks for my efforts to assist you, please click the "Thumbs Up" button to give me a Kudos.
And mark my post as Accepted Solution to help others find a similar solution as you have.

Take care now and do have a fabulous week ahead. 🙂
Regards,